Quoting from the very question you linked to: "This is a good example of why you should turn off the so-called 'grammar checker' on MSWord". There is absolutely no reason or excuse for anyone to use it. It does not know the first thing about English grammar. Conversely, you had a firm grasp of English grammar long before you even knew the words "grammar" or "Microsoft" existed. This tool should be your slave, not the other way round. Why use it against your own best judgment? It just wasted a considerable chunk of your precious lifetime with this question alone. It eats your life away. —
RegDwigнt ♦ Jan 9 at 14:55